public enum test5 {
    INSTANCE;

    public void m()
    {
    }

    public static void main(String[] args){
        for (int i = 0; i < 100; i++) {
            new Thread(()->{
                System.out.println(Thread.currentThread().getName()+" "+test5.INSTANCE.hashCode());
                test5.INSTANCE.m();
            }).start();
        }
    }
}
